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Counties → Idaho

Cassia County, Idaho

SDWIS compliance plate

Sheet ID031 · Cassia County 50 sys · 3,276 viol · #1819/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 98.0% flagged
  • HEALTH-LOW 14.7% health
  • RANK-MID #1819/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 50 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Bannock County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Cassia County ranks #1,819 of 3,254 counties by people served, and #16 of 44 counties in Idaho. See methodology · corpus placement.

Cassia County standing, mid-flagged corpus third

Flagged-system rate 98.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 14.7% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,819 of 3,254 · #16 of 44 in Idaho.

Flagged-rate neighbourhood around Cassia County

Lowest/highest poles plus in-state counties nearest Cassia County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Valley · lowest Shoshone · near Cassia · this county Camas · highest 89.5% 96.8% 97.3% 97.8% 98% 98% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Burley Water Dept 10,345 43 Clean
Oakley City Of 821 77 -
Lds Church Unity #5038650 525 14 -
Oakley Valley Water Corporation 500 239 -
Cotterell P O E Itd 450 15 -
Malta Schools 440 98 -
Lds Church Pella 437 22 -
Lds Church Malta 431 16 -
Pine Dell Lds Lodge 400 42 -
Lds Church View 383 26 -
Lds Church Springdale 375 8 -
Albion City Of 325 120 -
Lds Church Star 1st & 2nd Wards #5042070 313 22 -
Declo City Of 300 53 -
McCain Foods 267 151 -
Lds Church Albion 253 9 -
Pomerelle Ski Resort 200 94 -
Oakley Stake Ranch Camp 200 11 -
Lds Church Almo 192 8 -
Farmers Corner 150 89 -
Lds Church Elba 127 27 -
Lds Church Raft River #5275199 126 26 -
Travel Stop 216 125 37 -
Overlook Mobile Home Village 120 130 -
View Water Development Company 112 114 -
Magic Mountain Ski Lodge 100 90 -
Malta SR Seminary 80 34 -
Malta Fuel Depot 75 17 -
Golden Rail Trailer Court 70 14 -
Nielsons Country Court 70 101 -
Spring Creek Terraces 70 32 -
Lorraines Daycare 70 31 -
Ida-Beef 61 0 -
Del Rio Estates 60 49 -
Americold 60 12 -
Usfs Porcupine Spring Picnic Ground 50 42 -
Riverside Trailer Court 35 381 -
Springdale Acres 35 350 -
Outpost Steakhouse 35 93 -
Idpr City of Rocks National Reserve 25 55 -
Skyline Bar 25 33 -
Boathouse in Burley 25 159 -
Blm Milner Well 25 29 -
Hansens Hub 25 33 -
Pit Stop 25 23 -
Idpr Castle Rocks Sp 25 51 -
Creekside 25 24 -
Rock City Mercantile 25 55 -
Maglaughlins Gas & Grocery 25 47 -
School District 151 Central Office 25 30 -

Compare beyond Idaho

Mid-flagged peers for Cassia County

Cross-state counties nearest Cassia County on flagged-system share (98.0%) and cumulative violation count (3,276). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.